About the "Mute" mode, it's a bug where the receiver goes into a complete mute state, which is only resolved my factory to hard resetting the receiver and setup the receiver from scratz again. It's seems to be a bug with the CEC controlls.Ah gotya! I took yor "Mute" mode as sarcasm for shut downs so that was a missunderstanding on my side.
About the graphs I think ARC is doin heavy treatment to get yor sound in line. I don't exactly recall the app screens, but shouldn't there be a post ARC indicator?
Since the fronts show same characteristics the bumpy graph might be not only room related. In case you want to get back that kind of sound flavour you could limit the EQ max to where the subwoofer integration is handled. But are you missin sth in the sound at the moment? What are you aming for?
About the graphs i forgot to run the calculation. I have uploaded them again
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